As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE WOULD NOT REDUCE TO IDLE AT ALTITUDE (310) FUEL FLOW WITH THRUST LEVERS AT STOPS WERE 550 WHILE THE LEFT ENGINE WAS 350. ALL WAS NORMAL ON APPROACH AND LANDING. PERFORMED ENG ACEL/DECL CHECK ON RT ENGINE IAW AMM 71-00-00. COULD NOT DUPLICATE DISCREPANCY.